Home / 30,648.12-45,975.78-10,929.48

Finding the Fourth Proportional to 30,648.12, 45,975.78 and 10,929.48

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Solution

The fourth proportional to 30,648.12, 45,975.78 and 10,929.48 is: 16,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,648.12 : 45,975.78 = 10,929.48 : x
  2. Step 2: Convert to fraction form
    30,648.12/45,975.78 = 10,929.48/x
  3. Step 3: Cross multiply
    30,648.12x = 45,975.78 × 10,929.48
  4. Step 4: Simplify right side
    30,648.12x = 502,491,367.99
  5. Step 5: Solve for x
    x = 502,491,367.99/30,648.12
  6. Step 6: Final answer
    x = 16,395.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.